package com.four.seckill.config;

import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.extension.plugins.pagination.optimize.JsqlParserCountOptimize;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * Spring boot方式
 * @author hxw
 */
@Configuration
@ConditionalOnClass(value = {PaginationInterceptor.class})
public class MybatisPlusConfig {
    @Bean
    public PaginationInterceptor paginationInterceptor() {
         PaginationInterceptor paginationInterceptor = new PaginationInterceptor();
//         设置请求的页面大于最大页后操作， true调回到首页，false 继续请求  默认false
//         paginationInterceptor.setOverflow(false);
//         设置最大单页限制数量，默认 500 条，-1 不受限制
//         paginationInterceptor.setLimit(500);
//         开启 count 的 join 优化,只针对部分 left join
        paginationInterceptor.setCountSqlParser(new JsqlParserCountOptimize(true));
        return paginationInterceptor;
    }

}
